Brick-kiln



UNITED STATES PATE T ()FFICE.

NICHOLAS MERLEY, OF CANTON, OHIO.

BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 527,703, dated October16, 1894. Application r155 May.28,1894. 5.5.1 No. 512,655. (No 515551.)

To all whom it may concern.-

The object of the invention is to provide means by which the brick maybe more evenly burned, throughout the kiln, especially at the bottomportion.

With this object in view, my invention relates to certain features ofconstruction and combination of parts as will be hereinafter describedand claimed.

Figure 1 of the accompanying drawingsis a view in perspective of a brickkiln, illustrating my invention. Fig. 2, is a plan of, the flues underthe kiln. Fig. 3, is a perspective of the brick used in the upper floor.

A represents a circular flue in the ground beneath the kiln connected bya cross flue B, and C,a flue leading from the cross flues B to the stackK.

The flues A, B and O are bridged by tile 0. Shown in Fig. 1. Above andoverrthe flues is built series of walls I), having apertures as 0. Uponthese walls is placed a solid brick pavement G, having apertures 02 ande, that reg ister with the flues A, B and C, the numberand arrangementof these openings to be determined by the location or draft of thestack. On this paved floor D is provided a series of apertured walls E,similarto the walls D. Upon these walls E is placed an open pavement orfloor made of brick, having a recess in one side as shown in Fig. 3.

F represents the fire box which may-be built either inside or outside ofthe kiln, and H represents the bag, which may be constructed on any ofthe well known and approved plans. 4

In operation the'kiln is fired in the usual way, the flame and heatpassing from the fire box F into and up in the bag H, which extends fromthe grate bars to the top of the brick to be burned, which are put intothe kiln in the usual way, the heat passing over and down through thebrick, and fioor G, to the apertured walls E, that form a kind of socalled checker work, the progress or flow of the heat being retarded bythe solid or paved floor D, there being no exit except through theprovided apertures 01 and e. The walls E or checker Work becomeincandescent, the smoke all being consumed or substantially so, andthereby saving large quantities of coal. The apertured walls b areprovided to support the floor D, and ,to retard the too rapid flow ofheat to the flues A, B, O, the result of which is to render the wall Eand the floor G incandescent, and to retain 'the heat in that section ofthe kiln, the object of which is to so raise the heat at that point thatthe bottom row of brick will be as thoroughly burned as any above thatpoint, the result being that substantially every brick in the kiln willor can be burned and vitrified to that degree necessary for streetpaving, the surplus heatpassing down through the holes 01 and e to theflues A, B, O, therein,-to the stack D.

As heretofore constructed there was not suflicient resistance to theflow of the heat, or in other words it dropped too suddenly into theflues, and away from the brick, losing a large amount of heat, greatlyto the damage of the lower portion of the brick in the kiln, whichresulted in a large production of brick not suitable for street pavers,and therefore alarge loss in value of time and material.

Having thus fully described the nature and object of my invention, WhatI claim isv 1. The combination in a down draft brick kiln, of the firebox F, and bags H, of the series of apertured walls I) and E, the upperfloor G, the intermediate fioor D, having apertures d and e, and theflues A, B and 0, substantially as described and for the purpose setforth.

2. The combination in a down draft brick kiln, of the fire box andinside bag of the lower series of apertured walls 17, the upper seriesof apertured walls E and the middle floor, having apertures to registerwith the flues A, B, G, substantially as described and for the purposeset forth.

In testimony whereof I have hereunto set myhand this 12th day of May, A.D. 1894.

NICHOLAS MERLEY.

Witnesses:

W. K, MILLER, BURT A. MILLER.

